Frequently asked questions

Fence Calculator is a free tool that turns your fence length, height, material and style into a full material list: posts, rails, pickets or panels, concrete bags and hardware, each with its formula shown. Enter your own local prices to see a cost estimate too. There is no signup and no installation.

Yes. Every calculator on this site is free with no signup and no usage limit. The site is supported by advertising, which is never shown inside the calculator results themselves.

No. The calculator runs entirely in your browser. Nothing needs to be installed, and there is no account to create.

Yes, the calculator is built to work on a phone, tablet or desktop. Inputs and results are laid out to stay usable on a small screen rather than being a shrunk desktop layout.

Yes. Every value you type into the calculator is processed in your browser and is never sent to us. If you copy a share link, its values only leave your device if you send that link yourself. See the privacy policy for the full detail.

Material quantities (posts, rails, pickets, concrete) are computed directly from your inputs using the formulas shown next to each result, so they are as accurate as the numbers you enter. Cost figures are only shown once you enter your own local unit prices; this site does not publish a fixed national price list, since real prices vary too much by region and supplier to state as fact. Always verify post depth and any local code requirement with a licensed contractor before you dig.

Standard fence post spacing is typically 6 to 8 feet apart on center. Heavy materials like privacy wood fences often use 6-foot or 8-foot spacing to prevent sagging, while chain link and lighter vinyl fences commonly use 8-foot or 10-foot intervals. Our calculator lets you choose your post spacing so all post, rail and picket counts automatically adjust.

As a general construction guideline, fence posts should be set one-third to one-half of their above-ground height deep, which is typically at least 2 feet (24 inches) for a standard 6-foot fence. In colder climates, post footings must extend below the local frost line to prevent ground heaving. Always check local building codes and verify utility lines before digging.